To speak of Dempsey and be thorough you need to add in all the "Kid Blackie" fights he fought all over the country at tuff man carnivals and barnstormin' events. Most of these fights were against men who held and hit and were known for their strength. Jack fought alot of those men and although theres no record of those fights he used to say how he'd get ruffed up pretty good from a combination of bare knuckled to wrapping with cloth to what would be compared to as 4oz bag gloves. Point is he took alot of abuse and as the years go on that abuse mounts up and does effect stamina and often times with trial horse type guys their focus is deminished!
This isn't an excuse but these are the facts that fighters who traveled back in that era as fighters dealt with.
I had an Uncle ****e (Marino, and many other names hahaha) who fought in the teens and 20s and actually fought twice in one night when a snow storm stopped a few fighters from showing up. He actually did this a few times in Canada, he fought a 4 round prelim and came back to fight the main event hahahaha!! He fought at 115lbs and fought guys 155lbs. Again point is that era was very different even from 1925. That ten year period (1915 to 1925)is when boxing styles and training methods began to change, and thats the biggest change in history even in todays standards.
I like Jake over Tuney because I like punchers who can move and Jack was NOT slow footed at all he also had good hand speed and put punches together very well.
I also think Tuney is a fantastic boxer and he's the guy that would always give Dempsey fits.
I've read articles all through the years about Jack passing on fighting this guy or that guy and that gets over blown. As we all see management has the first call on opponents and theres outside obligations the fans have no clue about. I don't think Dempsey feared anyone, I met the man and as I've stated on this forum before he was the biggest 6'1" man I ever met!! His hands were like huge ham hocks and his hand shake was very very memorable. When you consider all the travels and all the fights this man had and he still was able to jump start his career as trials and tribulations kept coming and going. Imagine the current day fellows living his life???
When theres a fantasy fight suggestion lets put the modern guy back in time with Jack, say 1922 for age comparisons. Using his rules and his equipment!
I'd surely pay to see that;
Dempsey vs Marciano at the Yankee Stadium!!!!

Dempsey vs Ali at Madison Sq. Garden

Dempsey vs Tyson at Las Vegas Nev.
.................................................. .....Dempsey was the biggest name in sports back then even bigger than Ruth. He's still pretty big today too! Ray